17-0009 Adapter
WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.
0491391 170009 Adapter MW
NOTE:
(Adapter for radiator expansion tank) Series: E36 / model: M3 US engine: W10 [Discontinued]
Storage Location
B83
Courtesy of BMW OF NORTH AMERICA, INC.